A self contained diagnostic test device is provided for use in the collection
and
detection of a biological specimen or the like. The device comprises a tubular
swab and reagent dispensing cap component for receiving specimens. The reagent
dispensing cap component includes barrel, reagent chamber, and results window subcomponents,
and delivers one or more selected reagents to a specimen testing chamber for contacting
the collected specimen, upon the rotation of the reagent chamber component.